It's been half a century since the Say Hey Kid led the national pastime on its move to the West Coast. He's still a baseball man at heart, as monumental—and enigmatic—a legend as American sport has ever seen

You may not know their names or their faces just yet, but you will—and soon. These 15 teens are among the best in their sports in their age groups, and each one is on track to be a star at a major college, earn professional riches or go for gold at an Olympic Games. (In some cases, maybe all three)